IARGC— Get the number of command line arguments
IARGCreturns the number of arguments passed on the command line when the containing program was invoked.
This intrinsic routine is provided for backwards compatibility with
GNU Fortran 77. In new code, programmers should consider the use of
the COMMAND_ARGUMENT_COUNT intrinsic defined by the Fortran 2003
RESULT = IARGC()
Fortran 2003 functions and subroutines: GET_COMMAND, GET_COMMAND_ARGUMENT, COMMAND_ARGUMENT_COUNT